Haywood, 29, made his gal's favorite holiday one she'll never forget by staging an elaborate setup to pop the question.

After picking Cashiola – VP of Marketing/Brand Management for Warner Music Nashville – up from her Music Row office, the musician asked her to slip on a blindfold as they turned onto her street. Once inside her home, Cashiola was delighted to discover that while she was at work, Haywood had transformed every room into a sparkling winter wonderland.

But it was outside that the reason for the blindfold was revealed – a string of Christmas lights spelled out "Will you marry me?" on the front of the house. As Haywood put the ring on her finger, Cashiola, 29, replied, "Yes!"

The couple, who have been friends for about five years, publicly revealed their romance last month when they walked the CMA Awards red carpet together, accompanying Scott and Tyrrell, as well as third bandmate Charles Kelly and his wife Cassie McConnell.

Lady Antebellum is taking a brief break for the holidays from their tour, which resumes Jan. 27 in Tulsa, Okla. Their Own the Night album is nominated for a Grammy for Best Country Album.